Back in late 2009 Boston Dynamics revealed it was working on a humanoid robot that would test protective clothing for the military. Having already amazed the world three years earlier with the lifelike balancing capabilities of its quadruped BigDog, this would be the company's first bipedal robot. It was an ambitious project, but it appears the work has paid off. The robot's eerily realistic body movements are made all the more convincing now that its mechanical nature is hidden by a chemical protection suit.